diplodocus.org Git - nmh/blob - uip/pick.c

   1
   2 /*
   3  * pick.c -- search for messages by content
   4  *
   5  * This code is Copyright (c) 2002, 2008, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <h/tws.h>
  12 #include <h/picksbr.h>
  13 #include <h/utils.h>
  14
  15 #define PICK_SWITCHES \
  16     X("and", 0, ANDSW) \
  17     X("or", 0, ORSW) \
  18     X("not", 0, NOTSW) \
  19     X("lbrace", 0, LBRSW) \
  20     X("rbrace", 0, RBRSW) \
  21     X("cc  pattern", 0, CCSW) \
  22     X("date  pattern", 0, DATESW) \
  23     X("from  pattern", 0, FROMSW) \
  24     X("search  pattern", 0, SRCHSW) \
  25     X("subject  pattern", 0, SUBJSW) \
  26     X("to  pattern", 0, TOSW) \
  27     X("-othercomponent  pattern", 0, OTHRSW) \
  28     X("after date", 0, AFTRSW) \
  29     X("before date", 0, BEFRSW) \
  30     X("datefield field", 5, DATFDSW) \
  31     X("sequence name", 0, SEQSW) \
  32     X("nosequence", 0, NSEQSW) \
  33     X("public", 0, PUBLSW) \
  34     X("nopublic", 0, NPUBLSW) \
  35     X("zero", 0, ZEROSW) \
  36     X("nozero", 0, NZEROSW) \
  37     X("list", 0, LISTSW) \
  38     X("nolist", 0, NLISTSW) \
  39     X("version", 0, VERSIONSW) \
  40     X("help", 0, HELPSW) \
  41
  42 #define X(sw, minchars, id) id,
  43 DEFINE_SWITCH_ENUM(PICK);
  44 #undef X
  45
  46 #define X(sw, minchars, id) { sw, minchars, id },
  47 DEFINE_SWITCH_ARRAY(PICK, switches);
  48 #undef X
  49
  50 static int listsw = -1;
  51
  52 static void putzero_done (int) NORETURN;
  53
  54 int
  55 main (int argc, char **argv)
  56 {
  57     int publicsw = -1, zerosw = 1, vecp = 0;
  58     size_t seqp = 0;
  59     int msgnum;
  60     char *maildir, *folder = NULL, buf[100];
  61     char *cp, **argp, **arguments;
  62     svector_t seqs = svector_create (0);
  63     char *vec[MAXARGS];
  64     struct msgs_array msgs = { 0, 0, NULL };
  65     struct msgnum_array nums = { 0, 0, NULL };
  66     struct msgs *mp, *mp2;
  67     register FILE *fp;
  68
  69     done=putzero_done;
  70
  71     setlocale(LC_ALL, "");
  72     invo_name = r1bindex (argv[0], '/');
  73
  74     /* read user profile/context */
  75     context_read();
  76
  77     arguments = getarguments (invo_name, argc, argv, 1);
  78     argp = arguments;
  79
  80     while ((cp = *argp++)) {
  81         if (*cp == '-') {
  82             if (*++cp == '-') {
  83                 vec[vecp++] = --cp;
  84                 goto pattern;
  85             }
  86             switch (smatch (cp, switches)) {
  87             case AMBIGSW:
  88                 ambigsw (cp, switches);
  89                 listsw = 0;     /* HACK */
  90                 done (1);
  91             case UNKWNSW:
  92                 adios (NULL, "-%s unknown", cp);
  93
  94             case HELPSW:
  95                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  96                           invo_name);
  97                 print_help (buf, switches, 1);
  98                 listsw = 0;     /* HACK */
  99                 done (0);
 100             case VERSIONSW:
 101                 print_version(invo_name);
 102                 listsw = 0;     /* HACK */
 103                 done (0);
 104
 105             case CCSW:
 106             case DATESW:
 107             case FROMSW:
 108             case SUBJSW:
 109             case TOSW:
 110             case DATFDSW:
 111             case AFTRSW:
 112             case BEFRSW:
 113             case SRCHSW:
 114                 vec[vecp++] = --cp;
 115             pattern:
 116                 if (!(cp = *argp++))/* allow -xyz arguments */
 117                     adios (NULL, "missing argument to %s", argp[-2]);
 118                 vec[vecp++] = cp;
 119                 continue;
 120             case OTHRSW:
 121                 adios (NULL, "internal error!");
 122
 123             case ANDSW:
 124             case ORSW:
 125             case NOTSW:
 126             case LBRSW:
 127             case RBRSW:
 128                 vec[vecp++] = --cp;
 129                 continue;
 130
 131             case SEQSW:
 132                 if (!(cp = *argp++) || *cp == '-')
 133                     adios (NULL, "missing argument to %s", argp[-2]);
 134
 135                 if (!seq_nameok (cp))
 136                   done (1);
 137
 138                 svector_push_back (seqs, cp);
 139                 seqp++;
 140                 continue;
 141             case NSEQSW:
 142                 seqp = 0;
 143                 continue;
 144             case PUBLSW:
 145                 publicsw = 1;
 146                 continue;
 147             case NPUBLSW:
 148                 publicsw = 0;
 149                 continue;
 150             case ZEROSW:
 151                 zerosw++;
 152                 continue;
 153             case NZEROSW:
 154                 zerosw = 0;
 155                 continue;
 156
 157             case LISTSW:
 158                 listsw = 1;
 159                 continue;
 160             case NLISTSW:
 161                 listsw = 0;
 162                 continue;
 163             }
 164         }
 165         if (*cp == '+' || *cp == '@') {
 166             if (folder)
 167                 adios (NULL, "only one folder at a time!");
 168             else
 169                 folder = pluspath (cp);
 170         } else
 171                 app_msgarg(&msgs, cp);
 172     }
 173     vec[vecp] = NULL;
 174
 175     if (!context_find ("path"))
 176         free (path ("./", TFOLDER));
 177
 178     /*
 179      * If we didn't specify which messages to search,
 180      * then search the whole folder.
 181      */
 182     if (!msgs.size)
 183         app_msgarg(&msgs, "all");
 184
 185     if (!folder)
 186         folder = getfolder (1);
 187     maildir = m_maildir (folder);
 188
 189     if (chdir (maildir) == NOTOK)
 190         adios (maildir, "unable to change directory to");
 191
 192     /* read folder and create message structure */
 193     if (!(mp = folder_read (folder, 0)))
 194         adios (NULL, "unable to read folder %s", folder);
 195
 196     /* check for empty folder */
 197     if (mp->nummsg == 0)
 198         adios (NULL, "no messages in %s", folder);
 199
 200     /* parse all the message ranges/sequences and set SELECTED */
 201     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 202         if (!m_convert (mp, msgs.msgs[msgnum]))
 203             done (1);
 204
 205     /*
 206      * If we aren't saving the results to a sequence,
 207      * we default to list the results.
 208      */
 209     if (listsw == -1)
 210         listsw = !seqp;
 211
 212     if (publicsw == 1 && is_readonly(mp))
 213         adios (NULL, "folder %s is read-only, so -public not allowed", folder);
 214
 215     if (!pcompile (vec, NULL))
 216         done (1);
 217
 218     /* If printing message numbers to standard out, force line buffering on.
 219      */
 220     if (listsw)
 221         setvbuf (stdout, NULL, _IOLBF, 0);
 222
 223     /*
 224      * Scan through all the SELECTED messages and check for a
 225      * match.  If there is NOT a match, then add it to a list to
 226      * remove from the final sequence (it will make sense later)
 227      */
 228     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 229         if (is_selected (mp, msgnum)) {
 230             if ((fp = fopen (cp = m_name (msgnum), "r")) == NULL)
 231                 admonish (cp, "unable to read message");
 232             if (fp && pmatches (fp, msgnum, 0L, 0L)) {
 233                 if (listsw)
 234                     printf ("%s\n", m_name (msgnum));
 235             } else {
 236                 app_msgnum(&nums, msgnum);
 237             }
 238             if (fp)
 239                 fclose (fp);
 240         }
 241     }
 242
 243     if (nums.size >= mp->numsel)
 244         adios (NULL, "no messages match specification");
 245
 246     /*
 247      * So, what's happening here?
 248      *
 249      * - Re-read the folder and sequences, but with locking.
 250      * - Recreate the original set of selected messages from the command line
 251      * - Set the previous sequence
 252      * - Remove any messages that did NOT result in hits from the selection
 253      * - Add to any new sequences
 254      */
 255
 256     if (!(mp2 = folder_read (folder, 1)))
 257         adios (NULL, "unable to reread folder %s", folder);
 258
 259     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 260         if (!m_convert (mp2, msgs.msgs[msgnum]))
 261             done (1);
 262     seq_setprev (mp2);  /* set the previous-sequence */
 263
 264     /*
 265      * Nums contains a list of messages that we did NOT match.  Remove
 266      * that from the selection.
 267      */
 268
 269     for (msgnum = 0; msgnum < nums.size; msgnum++) {
 270         unset_selected(mp2, nums.msgnums[msgnum]);
 271         mp2->numsel--;
 272     }
 273
 274     /*
 275      * Add the matching messages to sequences
 276      */
 277     if (seqp > 0) {
 278         for (seqp = 0; seqp < svector_size (seqs); seqp++)
 279             if (!seq_addsel (mp2, svector_at (seqs, seqp), publicsw, zerosw))
 280                 done (1);
 281     }
 282
 283     /*
 284      * Print total matched if not printing each matched message number.
 285      */
 286     if (!listsw) {
 287         printf ("%d hit%s\n", mp2->numsel, mp2->numsel == 1 ? "" : "s");
 288     }
 289
 290     svector_free (seqs);
 291     context_replace (pfolder, folder);  /* update current folder         */
 292     seq_save (mp2);                     /* synchronize message sequences */
 293     context_save ();                    /* save the context file         */
 294     folder_free (mp);                   /* free folder/message structure */
 295     folder_free (mp2);
 296     done (0);
 297     return 1;
 298 }
 299
 300
 301 static void
 302 putzero_done (int status)
 303 {
 304     if (listsw && status && !isatty (fileno (stdout)))
 305         printf ("0\n");
 306     exit (status);
 307 }